【单选题】锋面的主要特征是（）。 Ⅰ．锋区中垂直温度梯度大； Ⅱ．水平温度梯度大； Ⅲ．气流呈气旋性切变； Ⅳ．锋两侧气压梯度不连续； Ⅴ．气流呈反气旋性切变； Ⅵ．锋面向暖区倾斜。

【单选题】（）会引起锋面波动。

【单选题】关于锋面与天气的叙述正确的是：

【简答题】【名词解释】锋面回波

【单选题】锋面是三度空间的天气系统，它在空间呈()。

【单选题】关于华南前汛期期间的锋面暴雨和暖区暴雨，下列哪些说法是错误的：（ ）

【单选题】Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight 1 before setting down. High desert winds had 2 the airp...

【简答题】试述锋面附近气象要素场的分布特征。

【单选题】Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight 1 before setting down. High desert winds had 2 the airp...

【判断题】锋两侧的气压倾向是不连续的,当等压线横穿锋面时便产生折角,折角尖端指向高压一方,锋落在低压脊中。